Ratiometric luminescence thermometry based on diverse thermal response from excited states in La2ZnTiO6: Tb3+

被引：10

作者：

Li, Jiawen ^{[1
]}

Wang, Jiawen ^{[1
]}

Lei, Ruoshan ^{[1
]}

Xu, Shiqing ^{[1
]}

机构：

[1] China Jiliang Univ, Inst Optoelect Mat & Devices, Key Lab Rare Earth Optoelect Mat & Devices Zhejian, Hangzhou 310018, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2022年 / 249卷

关键词：

Optical thermometry; Double perovskite; Depopulation pathway; Tb3+ ions; Self-calibrated; CHARGE-TRANSFER; OPTICAL THERMOMETRY; EMISSION; STRATEGY;

D O I：

10.1016/j.jlumin.2022.119047

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An excited-state thermometer was designed based on the difference in thermal change tendency of the excitation bands in double-perovskite La2ZnTiO6: Tb3+ phosphor. The temperature dependent excitation spectra monitored at Tb3+ 543 nm emission revealed that the 4f(8)-> 4f(7)5d and Tb3+-Ti4+ intervalence charge transfer (IVCT) excitation bands descended faster with rising temperature in contrast to the case of 4f-4f excitation peaks. The primary cause was analyzed by considering the relationship between the depopulating process and excitation wavelength. Moreover, the excitation intensity ratio of F-7(6)-> D-5(3) versus IVCT can be used for thermometry with maximal absolute and relative sensing sensitivities of similar to 4.46 x 10(-2) K-1 and 0.727% K-1, indicating the potential for temperature sensing applications.

引用

页数：6

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